<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			.box{
				width: 200px;
				height: 200px;
				margin-top: 100px;
				border-radius: 50%;
				box-shadow: 300px 0 0 -80px rgb(94,66,66),
				450px 0 0 -80px rgb(94,66,66),
				600px 0 0 -80px rgb(94,66,66),
				750px 0 0 -80px rgb(94,66,66),
				900px 0 0 -80px rgb(94,66,66),
				1050px 0 0 -80px rgb(94,66,66);
				animation: move 1s infinite linear;
			}
			.box::before,.box::after{
				content: '';
				display: block;
				width: 200px;
				height: 100px;
				margin-left: 100px;
				background-color: #ffc107;
			}
			.box::before{
				border-radius: 100px 100px 0 0;
				animation: shang 1s infinite linear;
			}
			.box::after{
				border-radius: 0 0 100px 100px;
				animation: xia 1s infinite linear;
			}
			@keyframes shang{
				0%{
					transform: rotate(-30deg);
				}
				100%{
					transform: rotate(0);
				}
			}
			@keyframes xia{
				0%{
					transform: rotate(30deg);
				}
				100%{
					transform: rotate(0);
				}
			}
			@keyframes move{
				100%{
					box-shadow: 150px 0 0 -80px rgb(94,66,66),
					300px 0 0 -80px rgb(94,66,66),
					450px 0 0 -80px rgb(94,66,66),
					600px 0 0 -80px rgb(94,66,66),
					750px 0 0 -80px rgb(94,66,66),
					900px 0 0 -80px rgb(94,66,66);
				}
			}
		</style>
	</head>
	<body>
		
		<div class="box">
			
		</div>
	</body>
</html>
